1 /* 2 * Copyright 2015 Google Inc. 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 8 #include "SkPaintFilterCanvas.h" 9 10 #include "SkPaint.h" 11 #include "SkTLazy.h" 12 13 class SkPaintFilterCanvas::AutoPaintFilter { 14 public: 15 AutoPaintFilter(const SkPaintFilterCanvas* canvas, Type type, const SkPaint* paint) 16 : fPaint(paint) { 17 fShouldDraw = canvas->onFilter(&fPaint, type); 18 } 19 20 AutoPaintFilter(const SkPaintFilterCanvas* canvas, Type type, const SkPaint& paint) 21 : AutoPaintFilter(canvas, type, &paint) { } 22 23 const SkPaint* paint() const { return fPaint; } 24 25 bool shouldDraw() const { return fShouldDraw; } 26 27 private: 28 SkTCopyOnFirstWrite<SkPaint> fPaint; 29 bool fShouldDraw; 30 }; 31 32 SkPaintFilterCanvas::SkPaintFilterCanvas(SkCanvas *canvas) 33 : INHERITED(canvas->imageInfo().width(), canvas->imageInfo().height()) { 34 35 // Transfer matrix & clip state before adding the target canvas. 36 this->clipRect(SkRect::Make(canvas->getDeviceClipBounds())); 37 this->setMatrix(canvas->getTotalMatrix()); 38 39 this->addCanvas(canvas); 40 } 41 42 void SkPaintFilterCanvas::onDrawPaint(const SkPaint& paint) { 43 AutoPaintFilter apf(this, kPaint_Type, paint); 44 if (apf.shouldDraw()) { 45 this->INHERITED::onDrawPaint(*apf.paint()); 46 } 47 } 48 49 void SkPaintFilterCanvas::onDrawPoints(PointMode mode, size_t count, const SkPoint pts[], 50 const SkPaint& paint) { 51 AutoPaintFilter apf(this, kPoint_Type, paint); 52 if (apf.shouldDraw()) { 53 this->INHERITED::onDrawPoints(mode, count, pts, *apf.paint()); 54 } 55 } 56 57 void SkPaintFilterCanvas::onDrawRect(const SkRect& rect, const SkPaint& paint) { 58 AutoPaintFilter apf(this, kRect_Type, paint); 59 if (apf.shouldDraw()) { 60 this->INHERITED::onDrawRect(rect, *apf.paint()); 61 } 62 } 63 64 void SkPaintFilterCanvas::onDrawRRect(const SkRRect& rrect, const SkPaint& paint) { 65 AutoPaintFilter apf(this, kRRect_Type, paint); 66 if (apf.shouldDraw()) { 67 this->INHERITED::onDrawRRect(rrect, *apf.paint()); 68 } 69 } 70 71 void SkPaintFilterCanvas::onDrawDRRect(const SkRRect& outer, const SkRRect& inner, 72 const SkPaint& paint) { 73 AutoPaintFilter apf(this, kDRRect_Type, paint); 74 if (apf.shouldDraw()) { 75 this->INHERITED::onDrawDRRect(outer, inner, *apf.paint()); 76 } 77 } 78 79 void SkPaintFilterCanvas::onDrawOval(const SkRect& rect, const SkPaint& paint) { 80 AutoPaintFilter apf(this, kOval_Type, paint); 81 if (apf.shouldDraw()) { 82 this->INHERITED::onDrawOval(rect, *apf.paint()); 83 } 84 } 85 86 void SkPaintFilterCanvas::onDrawArc(const SkRect& rect, SkScalar startAngle, SkScalar sweepAngle, 87 bool useCenter, const SkPaint& paint) { 88 AutoPaintFilter apf(this, kArc_Type, paint); 89 if (apf.shouldDraw()) { 90 this->INHERITED::onDrawArc(rect, startAngle, sweepAngle, useCenter, *apf.paint()); 91 } 92 } 93 94 void SkPaintFilterCanvas::onDrawPath(const SkPath& path, const SkPaint& paint) { 95 AutoPaintFilter apf(this, kPath_Type, paint); 96 if (apf.shouldDraw()) { 97 this->INHERITED::onDrawPath(path, *apf.paint()); 98 } 99 } 100 101 void SkPaintFilterCanvas::onDrawBitmap(const SkBitmap& bm, SkScalar left, SkScalar top, 102 const SkPaint* paint) { 103 AutoPaintFilter apf(this, kBitmap_Type, paint); 104 if (apf.shouldDraw()) { 105 this->INHERITED::onDrawBitmap(bm, left, top, apf.paint()); 106 } 107 } 108 109 void SkPaintFilterCanvas::onDrawBitmapRect(const SkBitmap& bm, const SkRect* src, const SkRect& dst, 110 const SkPaint* paint, SrcRectConstraint constraint) { 111 AutoPaintFilter apf(this, kBitmap_Type, paint); 112 if (apf.shouldDraw()) { 113 this->INHERITED::onDrawBitmapRect(bm, src, dst, apf.paint(), constraint); 114 } 115 } 116 117 void SkPaintFilterCanvas::onDrawBitmapNine(const SkBitmap& bm, const SkIRect& center, 118 const SkRect& dst, const SkPaint* paint) { 119 AutoPaintFilter apf(this, kBitmap_Type, paint); 120 if (apf.shouldDraw()) { 121 this->INHERITED::onDrawBitmapNine(bm, center, dst, apf.paint()); 122 } 123 } 124 125 void SkPaintFilterCanvas::onDrawImage(const SkImage* image, SkScalar left, SkScalar top, 126 const SkPaint* paint) { 127 AutoPaintFilter apf(this, kBitmap_Type, paint); 128 if (apf.shouldDraw()) { 129 this->INHERITED::onDrawImage(image, left, top, apf.paint()); 130 } 131 } 132 133 void SkPaintFilterCanvas::onDrawImageRect(const SkImage* image, const SkRect* src, 134 const SkRect& dst, const SkPaint* paint, 135 SrcRectConstraint constraint) { 136 AutoPaintFilter apf(this, kBitmap_Type, paint); 137 if (apf.shouldDraw()) { 138 this->INHERITED::onDrawImageRect(image, src, dst, apf.paint(), constraint); 139 } 140 } 141 142 void SkPaintFilterCanvas::onDrawImageNine(const SkImage* image, const SkIRect& center, 143 const SkRect& dst, const SkPaint* paint) { 144 AutoPaintFilter apf(this, kBitmap_Type, paint); 145 if (apf.shouldDraw()) { 146 this->INHERITED::onDrawImageNine(image, center, dst, apf.paint()); 147 } 148 } 149 150 void SkPaintFilterCanvas::onDrawVerticesObject(const SkVertices* vertices, SkBlendMode bmode, 151 const SkPaint& paint) { 152 AutoPaintFilter apf(this, kVertices_Type, paint); 153 if (apf.shouldDraw()) { 154 this->INHERITED::onDrawVerticesObject(vertices, bmode, *apf.paint()); 155 } 156 } 157 158 void SkPaintFilterCanvas::onDrawPatch(const SkPoint cubics[], const SkColor colors[], 159 const SkPoint texCoords[], SkBlendMode bmode, 160 const SkPaint& paint) { 161 AutoPaintFilter apf(this, kPatch_Type, paint); 162 if (apf.shouldDraw()) { 163 this->INHERITED::onDrawPatch(cubics, colors, texCoords, bmode, *apf.paint()); 164 } 165 } 166 167 void SkPaintFilterCanvas::onDrawPicture(const SkPicture* picture, const SkMatrix* m, 168 const SkPaint* paint) { 169 AutoPaintFilter apf(this, kPicture_Type, paint); 170 if (apf.shouldDraw()) { 171 this->INHERITED::onDrawPicture(picture, m, apf.paint()); 172 } 173 } 174 175 void SkPaintFilterCanvas::onDrawText(const void* text, size_t byteLength, SkScalar x, SkScalar y, 176 const SkPaint& paint) { 177 AutoPaintFilter apf(this, kText_Type, paint); 178 if (apf.shouldDraw()) { 179 this->INHERITED::onDrawText(text, byteLength, x, y, *apf.paint()); 180 } 181 } 182 183 void SkPaintFilterCanvas::onDrawPosText(const void* text, size_t byteLength, const SkPoint pos[], 184 const SkPaint& paint) { 185 AutoPaintFilter apf(this, kText_Type, paint); 186 if (apf.shouldDraw()) { 187 this->INHERITED::onDrawPosText(text, byteLength, pos, *apf.paint()); 188 } 189 } 190 191 void SkPaintFilterCanvas::onDrawPosTextH(const void* text, size_t byteLength, const SkScalar xpos[], 192 SkScalar constY, const SkPaint& paint) { 193 AutoPaintFilter apf(this, kText_Type, paint); 194 if (apf.shouldDraw()) { 195 this->INHERITED::onDrawPosTextH(text, byteLength, xpos, constY, *apf.paint()); 196 } 197 } 198 199 void SkPaintFilterCanvas::onDrawTextOnPath(const void* text, size_t byteLength, const SkPath& path, 200 const SkMatrix* matrix, const SkPaint& paint) { 201 AutoPaintFilter apf(this, kText_Type, paint); 202 if (apf.shouldDraw()) { 203 this->INHERITED::onDrawTextOnPath(text, byteLength, path, matrix, *apf.paint()); 204 } 205 } 206 207 void SkPaintFilterCanvas::onDrawTextRSXform(const void* text, size_t byteLength, 208 const SkRSXform xform[], const SkRect* cull, 209 const SkPaint& paint) { 210 AutoPaintFilter apf(this, kText_Type, paint); 211 if (apf.shouldDraw()) { 212 this->INHERITED::onDrawTextRSXform(text, byteLength, xform, cull, *apf.paint()); 213 } 214 } 215 216 void SkPaintFilterCanvas::onDrawTextBlob(const SkTextBlob* blob, SkScalar x, SkScalar y, 217 const SkPaint& paint) { 218 AutoPaintFilter apf(this, kTextBlob_Type, paint); 219 if (apf.shouldDraw()) { 220 this->INHERITED::onDrawTextBlob(blob, x, y, *apf.paint()); 221 } 222 } 223
